Every scan also looks for byte-identical files in the scanned files. The Duplicates tab shows them in groups.

1. Files are grouped by size (cheap).
2. Only files with the same size are compared by their SHA-256 checksum.

Not checked:

• empty files — they are all "identical", and trashing e.g. empty __init__.py files would break projects;
• files larger than 500 MB;
• online-only cloud files (OneDrive, Dropbox, iCloud) — reading them would download them;
• several hard links to the same file — they count as one file.

The log tells you how many files were skipped and why. On very large folders the check stops after a generous time limit and says so; the groups found until then are correct.

1. Open the Duplicates tab after a scan.
2. Select the copies you want to remove — click, Ctrl+click for more, Shift+click for a range. Click a group row to expand or collapse it.
3. Move selected to Trash — at least one file of every group must stay unselected; otherwise the button is disabled.
4. Confirm.

Files go to the Recycle Bin / Trash and can be restored from there. Nothing is permanently deleted:

• Before a file is trashed, Simple Organizer checks that a copy you keep still exists with the same content (size and SHA-256). If it was deleted or changed since the scan, the file stays in place.
• Files on network drives have no Recycle Bin and are left in place (with a message).
• If Windows wants to delete a file permanently (e.g. too large for the Recycle Bin), it asks first — the question appears above Simple Organizer.
• On Linux, gio trash or trash-put is used; otherwise Simple Organizer uses the freedesktop.org Trash directly (on USB sticks and other partitions the drive's own .Trash-<uid> folder).

Trashed files are removed from the Preview, so Organize never tries to move them.

Right-click a row to open its folder or copy its path.